Cocitation network are recognized by the academic community as the knowledge base, which providing the knowledge inputted and transferred as this paper proposed. In this article the cocitation research methods were systematically described and annual data of Library and Information Science from 1900 to 2012 were collected, the cocitation journals networks and coauthor networks were carefully formed. With indepth analysis, it was found that within the disciplines core cited journals and authors were often repeated and all the form of journals and authors identified in subjects or in the history of the science the evolution of the critical period before and after they were connected. Finally, the cocitation network approaches limitations and future development aspects were discussed and it is concluded that the existing theories need to be developed in solving the problem, the applications in scientific subjects field for cocitation network in the in future will be regarded as an important direction.%本文研究了知识网络中的文献共被引网络，它形成着一个学科的知识基础，是学科知识输入和转移的重要知识之源。文章在总结和梳理了共被引网络的一般研究方法后，采集了1900~2012年图书馆与情报学的71350条题录数据，构建了期刊共被引知识网络与作者共被引等知识网络，并对其进行深入数据挖掘和分析，发现了经常反复被引的学科内核心期刊与作者群体，以及在学科的演化历史上连接前后时段的关键性节点期刊与作者群体。论文的最后还对文献共被引网络方法局限性方面和未来发展方面进行了讨论与总结，指出在解决现有理论难题后，共被引网络未来在各具体学科领域内的深化将是其发挥用武之地的重要发展方向。
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